There is anyone who likes his armor system?
I do. Wouldn't put it every game, but in the context of D:OS 2 it works well.
Is a whole system with skill balanced around it, so you have status effect that actually bypass armor or that precisely targets armor itself like Acid or Suffocation, and skills that add armor or remove it to produce certain effects. When creating characters you end up having to take both type of armour into account and I find myself seeking to find synergies between skills to make it so no a single one of my party members is unable to target a type of armor or use a type of CC skill. For example, making sure to take some necromancy with my casters so they can target physical armor, or some spells like medusa head for my martials so they can CC enemies without magic armor. It does help the game differentiate itself from others DnD derivatives by adding a certain unique layer of tactical thinking in combat.
In conclusion, is a system that in paper may not look so good and there are some balancing issues, but in execution it actually works better than one may think, at least in my opinion.